Questions:
- why not include the English documentation in your download, along with
the SVGs?
- why not include the DTDs also?

The documentation is at the url given.
rng schemas are provided - DTDs dont
cover one of the attributes

    <attribute name="xAxisType" a:defaultValue="auto">
	<choice>
	  <group>
	    <choice>
	      <value>auto</value>
	      <value>withZero</value>
	      <value>shifted</value>
	      <value>log</value>
	    </choice>
	  </group>
 <data type='string'>
    <param
name='pattern'><!--
Year -->(\[Y(01|0001)?\][^\[]?)<!--
Month -->(\[M(1|01)?\]?[^\[]?)<!--
Day -->(\[D(1|01)?\])?<!--
Hour -->(T\[H[01]{0,2}\]:<!--
Minutes -->\[m(1|01)?\]:<!--
Seconds         -->\[s(1|01)?\]\.<!--
decimal seconds -->\[f(1|01|001)?\])?</param>
  </data>
	</choice>	
      </attribute>

--
Dave Pawson
XSLT XSL-FO FAQ.
http://www.dpawson.co.uk